140 BLUE-GREEN HUMMING-BIRD. 



green on the belly ; the vent is white, and forms a 

 distinct mark between the green of the belly and 

 brown of the under tail-coverts. The young have 

 the blue of the throat less clear, and the under parts 

 more mingled with gray ; the bill is also brown, where 

 it is yellow in the adults. 



The female has not been discovered. 



